Dji Phantom 4 Advanced Flight Controller Replacement Repair Guide

Difficulty

Difficult

Steps

Time Required

                          30 minutes - 1 hour

Sections

Propeller
1 step
Shell
10 steps
Flight Controller
2 steps

Flags

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Introduction

What you need

Step 1

              Propeller

Use your finger tips to pinch the damaged propeller.
Twist the propeller counterclockwise and pull up to remove.

Use your finger tips to pinch the damaged propeller.

Twist the propeller counterclockwise and pull up to remove.

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Step 2

              Shell

Remove the eight 7 mm hex screws by turning counterclockwise with a 2 mm hex bit.

Remove the eight 7 mm hex screws by turning counterclockwise with a 2 mm hex bit.

Step 3

Pry the LED motor covers off with a metal spudger.
The prying location is marked by an indent that points outward from the arm.

Pry the LED motor covers off with a metal spudger.

The prying location is marked by an indent that points outward from the arm.

Step 4

Pry the paper covering off the four corners with a metal spudger.

Pry the paper covering off the four corners with a metal spudger.

Step 5

Remove the twelve 8.7 mm hex screws with a 2 mm hex bit from the motor bases.

Remove the twelve 8.7 mm hex screws with a 2 mm hex bit from the motor bases.

Step 6

Flip the drone on its back
Remove the eight 4.5 mm hex screws by turning them counterclockwise with a 1.5 mm hex bit.
Separate the mesh from the drone by pulling up gently and rocking left to right.
The cable connects from the camera to the drone. Pulling up could rip the connection. Tilt the mesh 90 degrees towards the cable.

Flip the drone on its back

Remove the eight 4.5 mm hex screws by turning them counterclockwise with a 1.5 mm hex bit.

Separate the mesh from the drone by pulling up gently and rocking left to right.

The cable connects from the camera to the drone. Pulling up could rip the connection. Tilt the mesh 90 degrees towards the cable.

Step 7

Remove two 1.2mm screws using the JIS #000 bit from the camera cable retaining bracket.

Remove two 1.2mm screws using the JIS #000 bit from the camera cable retaining bracket.

Step 8

Lift the camera connector at one end with your hand and remove the mesh.

Lift the camera connector at one end with your hand and remove the mesh.

Step 9

Remove the two 1.2 mm screws using a JIS #000 bit from the antenna retaining bracket.
Pull the four U.FL antennae up.
The U.FL antenna connectors are fragile.
Remove the two 4 mm screws using a JIS #000 bit.

Remove the two 1.2 mm screws using a JIS #000 bit from the antenna retaining bracket.

Pull the four U.FL antennae up.

The U.FL antenna connectors are fragile.

Remove the two 4 mm screws using a JIS #000 bit.

Step 10

Pry apart the clamshell at the motor end.
Separate the clamshell.
Two wires connect from the lower frame to the upper frame at the front of the drone. Pulling the clamshell apart hard may damage the connectors and wires.

Pry apart the clamshell at the motor end.

Separate the clamshell.

Two wires connect from the lower frame to the upper frame at the front of the drone. Pulling the clamshell apart hard may damage the connectors and wires.

Step 11

Press the connector tabs with a spudger and pull on the wire simultaneously.
Remove the shell from the rest of the drone.

Press the connector tabs with a spudger and pull on the wire simultaneously.

Remove the shell from the rest of the drone.

Step 12

              Flight Controller

Peel the electrical tape off.
Unlock the connector by prying up on the black latch.
Pull the ribbon cable out with tweezers.

Peel the electrical tape off.

Unlock the connector by prying up on the black latch.

Pull the ribbon cable out with tweezers.

Step 13

Remove the flight controller vibration dampers by pushing the dampers into the mounts with the spudger.
Be careful not to tear the rubber isolators. Replace the rubber isolators if damaged.

Remove the flight controller vibration dampers by pushing the dampers into the mounts with the spudger.

Be careful not to tear the rubber isolators. Replace the rubber isolators if damaged.

To reassemble your device, follow these instructions in reverse order.

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                                                                                      6 other people completed this guide.

Author

                                      with 3 other contributors

                    Ben Li

Member since: 10/08/2018

237 Reputation

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Team

                       Cal Poly, Team S15-G6, White Fall 2018                        

                                                  Member of Cal Poly, Team S15-G6, White Fall 2018 



                    CPSU-WHITE-F18S15G6                     


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                                            6 Guides authored

MastaGzu - Jun 30, 2019

Great guide but there should have been step 14 to show how to put the control board back on top of the isolators.

Also I found it was not necessary to remove the bottom shell to remove and replace the control board. There is enough room to remove and replace with the shell in place and this will greatly decrease the time required to do the repair. I used the rounded edge of a small flat screw driver.

The replacement of the board is a challenge and that is where I got stuck. I used monofilament fishing line. Make a loop in the line and insert the loop through the mounting hole in the board. Pass the loop over the isolator ball and into the groove around it. Bring the mounting board into contact with the isolator ball and gently pull the fishing line loop and pull the isolator ball up into the mounting hole. If you are lucky, the ball will come through and flatten itself out as is is supposed to. If not, use tweezers to grab the ball and gently pull it up through the hole.

emeremnd - Jul 3, 2019

Thant for the

Gerald Holt - Nov 26, 2020

Excellent guide. This helped so much for me to replace my failed flight control board. I dropped one of the small screws and could not find it! I bought a DJI Phantom 4 fastener pack that has alot of these specialty screws. I only needed one screw, but now have lots of backups for future. An improvement to the instructions would be reassembly steps. It could help with some of the wire routing that I figured out the routing, but callouts would help. As a contribution to a possible update, I figured out a simple, reliable technique to push the dampener boots through the flight control board corners. Essentially use needle-nose pliers to squeeze the wide part of the dampener and push one end of the squished profile through the board hole. Use your other hand to pinch or roll the rest of the dampener through the hole. If allowed here is a link to a video showing how I did this: https://youtu.be/QHvy0n_iorE

Steven King - Oct 2, 2021

Introduction#

What you need#

Team#

Introduction

What you need

Team